Thread cop



July 31, 1934. R. N. CORTI-:ELL

THREAD COP Filed Nov. '7, 1951 Patented July 31, 1934 UNITED STATES 2Claims.

This invention relates to a thread cop comprising a tubular core usuallya relatively thick paper tube, a thread body usually universally orcross wound on the core, an annular cushion of 5 felt or othercompressible material bearing on the lower end of the thread body and anannular base, usually 'cut from stiff paper board, secured to the corein such manner as to press the cushion closely against the end of thethread body on which it bears, and a tubular hub of compressiblematerial inserted in an end portion of the core and adapted to rotate onthe spindle of a copsupporting stand to permit free rotation and preventlateral displacement of the cop, the cushion being intended to preventloose convolutions of the thread which drop from the periphery of thethread body from being drawn under the thread body and caught or grippedthereby, and broken by strain exerted thereon by the stitch-formingmechanism of a sewing machine.

The object of the invention is to provide improved means rigidlysecuring the base to the core so that the base cannot rotateindependently of the core and thread body, and is not liable to beaccidentally detached from the cop, said means confining the cushioncompressed against an end of the thread body, and positively preventingaccidental removal of the hub from the core.

Of the accompanying of this specification,

Figure 1 shows in section a portion of a thread cop, thev cushion, thebase, the hub, and means securing the base and the hub to the cop andconfining the cushion compressed against the thread body, said meanspositively preventing removal of the hub from the cop.

Figure 2 is a fragmentary view similar to a portion of Figure 1.

The same reference characters indicate the same parts in all of thefigures.

12 designates the tubular core, and 13 the thread body of a well knownthread cop.

14 designates an annular compressible cushion formed to cover one end ofthe thread body and preferably of somewhat larger diameter than saidend.

l5 designates an annular base of any suitable stiff material such aspaper board.

19 designates a tubular bushing preferably of somewhat compressiblematerial such as wood, inserted in an end portion of the core andproportioned to permit the interposition of tongues 160 between theinternal surface of the core and the external surface of the bushing,said tongues drawing forming a part PATENT OFFICE being backed by thebushing and forced thereby into gripping engagement with the internalsurface of the core, the latter being somewhat compressible. The bushingbeing also somewhat compressible, the tongues are in gripping engagementalso with the bushing.

The bushing and tongues are therefore rmly secured in the core.

In this instance the tongues 160 are the Shanks of slender nails drivenbetween the core 12 and 65 bushing 19, and so proportioned that whendriven they have a gripping engagement with the internal surface of thecore and the external surface of the bushing.

Each nail has a thin flat head 17o projecting 70 both outwardly andinwardly from the shank, the outer portion bearing on the bottom of thebase 15. The inner portion bears on the lower end of the hub 19, andconstitutes a stop positively preventing downward movement of the hubfrom its operative position.

The nails are preferably made of copper or galvanized iron.

I claim:

1. A thread cop comprising a tubular core of compressible material, athread body wound thereon, an annular compressible cushion covering thebase end of the thread body, an annular base bearing on the cushion, atubular hub of compressible material inserted in an end portion of thecore and adapted to rotate on the spindle of a cop-supporting stand, andmeans separably securing the base to the core to prevent independentrotation of the base, conne the cushion compressed against the threadbody, and positively confine the hub in the core, said means including aplurality of tongues interposed between the internal surface of the coreand the external surface of the hub in indenting engagement with saidsurfaces, so that the hub is engaged with the core to rotate therewith,said tongues having stops bearing on the under surface of the base andon the lower end of the hub to confine the base against the cushion andpositively oppose removal of the hub from the core.

2. A thread cop as specified by claim l, said tongues being the Shanksof nails interposed between the hub and core, said stops being nailheads projecting laterally outward and inward from the Shanks andbearing on the bottom surface of the base, and on the lower end of thehub.

ROBERT N. CORTHELL.

